1. Division of Pulmonary, Allergy, and Critical Care, Department of Medicine,
2. Department of Family Medicine and Community Health,
3. Department of Biostatistics, Epidemiology, and Informatics, and
4. Department of Public Health Sciences, Henry Ford Health System, Detroit, Michigan;
5. Marshfield Clinic Research Institute, Marshfield, Wisconsin;
6. Institute for Health Research, Kaiser Permanente Colorado, Denver, Colorado;
7. Center for Health Research, Kaiser Permanente Hawaii, Oahu, Hawaii;
8. Department of Pulmonary and Critical Care Medicine, Henry Ford Hospital, Detroit, Michigan;
9. Division of General Internal Medicine, Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania;
10. Healthcare Delivery Research Program, National Cancer Institute, Bethesda, Maryland; and
11. Department of Epidemiology, University of Michigan, Ann Arbor, Michigan